Save current buffer per 5 miniutes

[Byung-Hee HWANG (황병희)]

Hi there,

Actually i'm new emacs, elisp.

Sometime i edit several unicode file with Emacs. This works have
translations things -- Korean UTF-8 characters.

Well i'm affraid to lost my works. Because my ubuntu's X is freeze
sometimes. So i start to search save current buffer by auto per 5
miniutes. However i failed. Could you please give me some hints?

Thanks for advance!

-- 
^고맙습니다 감사합니다_^))//